keyword
MENU ▼
Read by QxMD icon Read
search

Pontics

keyword
https://www.readbyqxmd.com/read/28429481/interdisciplinary-interface-between-fixed-prosthodontics-and-periodontics
#1
REVIEW
Jaafar Abduo, Karl M Lyons
Although periodontal factors do not usually have a direct effect on the survival of a fixed prosthesis, harmony between the prosthesis and the periodontium is critical otherwise esthetics, the longevity of the prosthesis and the periodontium will be compromised. A close interdisciplinary relationship between periodontics and prosthodontics is therefore necessary to avoid an unsatisfactory treatment outcome, requiring extensive and expensive retreatment. The design of the prosthesis, the number and quality of the abutment teeth, the preparation and the pontic, the occlusion and the material need to be considered when planning prosthodontic treatment...
June 2017: Periodontology 2000
https://www.readbyqxmd.com/read/28428609/socket-preservation
#2
L Fee
Socket preservation maintains bone volume post-extraction in anticipation of an implant placement or fixed partial denture pontic site. This procedure helps compensate for the resorption of the facial bone wall. Socket preservation should be considered when implant placement needs to be delayed for patient or site-related reasons. The ideal healing time before implant placement is six months. Socket preservation can reduce the need for later bone augmentation. By reducing bone resorption and accelerating bone formation it increases implant success and survival...
April 21, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28402349/partial-extraction-therapies-pet-part-2-procedures-and-technical-aspects
#3
Howard Gluckman, Maurice Salama, Jonathan Du Toit
Part 1 of this series introduced the partial extraction therapies as a group of techniques for ridge preservation at immediate implant placement and beneath pontic sites. The concept proposes a paradigm shift away from extract and augment toward partly retaining the tooth root to preserve the ridge and prevent buccopalatal collapse. The revolutionary socket-shield technique was introduced in 2010; however, there has been no follow-up literature to guide the clinician in terms of procedural steps. While root submergence is well established, the socket-shield and pontic shield are still in their clinical infancy and require long-term clinical data before they can be proposed as routine in everyday implant dentistry...
May 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/28387361/origin-and-spread-of-human-mitochondrial-dna-haplogroup-u7
#4
Hovhannes Sahakyan, Baharak Hooshiar Kashani, Rakesh Tamang, Alena Kushniarevich, Amirtharaj Francis, Marta D Costa, Ajai Kumar Pathak, Zaruhi Khachatryan, Indu Sharma, Mannis van Oven, Jüri Parik, Hrant Hovhannisyan, Ene Metspalu, Erwan Pennarun, Monika Karmin, Erika Tamm, Kristiina Tambets, Ardeshir Bahmanimehr, Tuuli Reisberg, Maere Reidla, Alessandro Achilli, Anna Olivieri, Francesca Gandini, Ugo A Perego, Nadia Al-Zahery, Massoud Houshmand, Mohammad Hossein Sanati, Pedro Soares, Ekta Rai, Jelena Šarac, Tena Šarić, Varun Sharma, Luisa Pereira, Veronica Fernandes, Viktor Černý, Shirin Farjadian, Deepankar Pratap Singh, Hülya Azakli, Duran Üstek, Natalia Ekomasova Trofimova, Ildus Kutuev, Sergei Litvinov, Marina Bermisheva, Elza K Khusnutdinova, Niraj Rai, Manvendra Singh, Vijay Kumar Singh, Alla G Reddy, Helle-Viivi Tolk, Svjetlana Cvjetan, Lovorka Barac Lauc, Pavao Rudan, Emmanuel N Michalodimitrakis, Nicholas P Anagnou, Kalliopi I Pappa, Maria V Golubenko, Vladimir Orekhov, Svetlana A Borinskaya, Katrin Kaldma, Monica A Schauer, Maya Simionescu, Vladislava Gusar, Elena Grechanina, Periyasamy Govindaraj, Mikhail Voevoda, Larissa Damba, Swarkar Sharma, Lalji Singh, Ornella Semino, Doron M Behar, Levon Yepiskoposyan, Martin B Richards, Mait Metspalu, Toomas Kivisild, Kumarasamy Thangaraj, Phillip Endicott, Gyaneshwer Chaubey, Antonio Torroni, Richard Villems
Human mitochondrial DNA haplogroup U is among the initial maternal founders in Southwest Asia and Europe and one that best indicates matrilineal genetic continuity between late Pleistocene hunter-gatherer groups and present-day populations of Europe. While most haplogroup U subclades are older than 30 thousand years, the comparatively recent coalescence time of the extant variation of haplogroup U7 (~16-19 thousand years ago) suggests that its current distribution is the consequence of more recent dispersal events, despite its wide geographical range across Europe, the Near East and South Asia...
April 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28356815/a-higher-level-classification-of-the-pannonian-and-western-pontic-steppe-grasslands-central-and-eastern-europe
#5
Wolfgang Willner, Anna Kuzemko, Jürgen Dengler, Milan Chytrý, Norbert Bauer, Thomas Becker, Claudia Biţă-Nicolae, Zoltán Botta-Dukát, Andraž Čarni, János Csiky, Ruzica Igić, Zygmunt Kącki, Iryna Korotchenko, Matthias Kropf, Mirjana Krstivojević-Ćuk, Daniel Krstonošić, Tamás Rédei, Eszter Ruprecht, Luise Schratt-Ehrendorfer, Yuri Semenishchenkov, Zvjezdana Stančić, Yulia Vashenyak, Denys Vynokurov, Monika Janišová
QUESTIONS: What are the main floristic patterns in the Pannonian and western Pontic steppe grasslands? What are the diagnostic species of the major subdivisions of the class Festuco-Brometea (temperate Euro-Siberian dry and semi-dry grasslands)? LOCATION: Carpathian Basin (E Austria, SE Czech Republic, Slovakia, Hungary, Romania, Slovenia, N Croatia and N Serbia), Ukraine, S Poland and the Bryansk region of W Russia. METHODS: We applied a geographically stratified resampling to a large set of relevés containing at least one indicator species of steppe grasslands...
January 2017: Applied Vegetation Science
https://www.readbyqxmd.com/read/28349769/finite-element-analysis-of-implant-supported-prosthesis-with-pontic-and-cantilever-in-the-posterior-maxilla
#6
Victor Eduardo de Souza Batista, Fellippo Ramos Verri, Daniel Augusto de Faria Almeida, Joel Ferreira Santiago Junior, Cleidiel Aparecido Araújo Lemos, Eduardo Piza Pellizzer
The aim of this study was to evaluate the influence of pontic and cantilever designs (mesial and distal) on 3-unit implant-retained prosthesis at maxillary posterior region verifying stress and strain distributions on bone tissue (cortical and trabecular bones) and stress distribution in abutments, implants and fixation screws, under axial and oblique loadings, by 3D finite element analysis. Each model was composed of a bone block presenting right first premolar to the first molar, with three or two external hexagon implants (4...
May 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28335724/a-genetic-chronology-for-the-indian-subcontinent-points-to-heavily-sex-biased-dispersals
#7
Marina Silva, Marisa Oliveira, Daniel Vieira, Andreia Brandão, Teresa Rito, Joana B Pereira, Ross M Fraser, Bob Hudson, Francesca Gandini, Ceiridwen Edwards, Maria Pala, John Koch, James F Wilson, Luísa Pereira, Martin B Richards, Pedro Soares
BACKGROUND: India is a patchwork of tribal and non-tribal populations that speak many different languages from various language families. Indo-European, spoken across northern and central India, and also in Pakistan and Bangladesh, has been frequently connected to the so-called "Indo-Aryan invasions" from Central Asia ~3.5 ka and the establishment of the caste system, but the extent of immigration at this time remains extremely controversial. South India, on the other hand, is dominated by Dravidian languages...
March 23, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28286679/a-case-of-bisphosphonate-related-osteonecrosis-of-the-jaw-in-a-patient-with-subpontic-osseous-hyperplasia
#8
Chiaki Tsuji, Hiroshi Watanabe, Hidenori Nakayama, Mitsuo Goto, Kenichi Kurita
Subpontic osseous hyperplasia (SOH) is a growth of bone occurring on the edentulous ridge beneath the pontics of fixed partial dentures (FPDs). This report describes a case of bisphosphonate- (BP-) related osteonecrosis of the jaw (BRONJ) in a SOH patient followed by deciduation of the bony lesion. A 73-year-old woman visited a dental clinic after experiencing pain and swelling beneath the pontics of a FPD that had been inserted 15 years ago. The pontics were removed, but the symptoms persisted and she was referred to our hospital...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28281087/genetic-differentiation-between-upland-and-lowland-populations-shapes-the-y-chromosomal-landscape-of-west-asia
#9
O Balanovsky, M Chukhryaeva, V Zaporozhchenko, V Urasin, M Zhabagin, A Hovhannisyan, A Agdzhoyan, K Dibirova, M Kuznetsova, S Koshel, E Pocheshkhova, I Alborova, R Skhalyakho, O Utevska, Kh Mustafin, L Yepiskoposyan, C Tyler-Smith, E Balanovska
Y-chromosomal variation in West Asian populations has so far been studied in less detail than in the neighboring Europe. Here, we analyzed 598 Y-chromosomes from two West Asian subregions-Transcaucasia and the Armenian plateau-using 40 Y-SNPs and 17 Y-STRs and combined them with previously published data from the region. The West Asian populations fell into two clusters: upland populations from the Anatolian, Armenian and Iranian plateaus, and lowland populations from the Levant, Mesopotamia and the Arabian Peninsula...
April 2017: Human Genetics
https://www.readbyqxmd.com/read/28266657/diverse-origin-of-mitochondrial-lineages-in-iron-age-black-sea-scythians
#10
Anna Juras, Maja Krzewińska, Alexey G Nikitin, Edvard Ehler, Maciej Chyleński, Sylwia Łukasik, Marta Krenz-Niedbała, Vitaly Sinika, Janusz Piontek, Svetlana Ivanova, Miroslawa Dabert, Anders Götherström
Scythians were nomadic and semi-nomadic people that ruled the Eurasian steppe during much of the first millennium BCE. While having been extensively studied by archaeology, very little is known about their genetic identity. To fill this gap, we analyzed ancient mitochondrial DNA (mtDNA) from Scythians of the North Pontic Region (NPR) and successfully retrieved 19 whole mtDNA genomes. We have identified three potential mtDNA lineage ancestries of the NPR Scythians tracing back to hunter-gatherer and nomadic populations of east and west Eurasia as well as the Neolithic farming expansion into Europe...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28243301/fracture-strength-of-three-unit-implant-supported-fixed-partial-dentures-with-excessive-crown-height-fabricated-from-different-materials
#11
Vahideh Nazari, Safoura Ghodsi, Marzieh Alikhasi, Majid Sahebi, Ahmad Reza Shamshiri
OBJECTIVES: Fracture strength is an important factor influencing the clinical long-term success of implant-supported prostheses especially in high stress situations like excessive crown height space (CHS). The purpose of this study was to compare the fracture strength of implant-supported fixed partial dentures (FPDs) with excessive crown height, fabricated from three different materials. MATERIALS AND METHODS: Two implants with corresponding abutments were mounted in a metal model that simulated mandibular second premolar and second molar...
November 2016: Journal of Dentistry of Tehran University of Medical Sciences
https://www.readbyqxmd.com/read/28223527/ancient-x-chromosomes-reveal-contrasting-sex-bias-in-neolithic-and-bronze-age-eurasian-migrations
#12
Amy Goldberg, Torsten Günther, Noah A Rosenberg, Mattias Jakobsson
Dramatic events in human prehistory, such as the spread of agriculture to Europe from Anatolia and the late Neolithic/Bronze Age migration from the Pontic-Caspian Steppe, can be investigated using patterns of genetic variation among the people who lived in those times. In particular, studies of differing female and male demographic histories on the basis of ancient genomes can provide information about complexities of social structures and cultural interactions in prehistoric populations. We use a mechanistic admixture model to compare the sex-specifically-inherited X chromosome with the autosomes in 20 early Neolithic and 16 late Neolithic/Bronze Age human remains...
March 7, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28217840/a-comparison-of-us-and-japanese-dental-restorative-care-present-on-service-members-recovered-from-the-wwii-era
#13
Calvin Y Shiroma
The documentation of dental materials used in the USA during the WWII era is readily available, while references for the Japanese are minimal. It was therefore important to build a photographic database of Japanese restorative care which could be utilized as a comparison tool for the deployed odontologist. The dental restorative care of approximately 400 US and 100 Japanese sets of remains was evaluated. Both countries share many similar restorative techniques to include collared crowns, full-coverage restorations, cantilever bridge/pontics to close spaces; restorative materials such as amalgam, gold, and zinc phosphate (temporary) restorations; and removable prostheses...
February 20, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28216848/clinical-outcome-of-tooth-supported-fixed-partial-dentures-in-unilateral-cleft-lip-and-palate-patients-a-case-series
#14
Sudhir Bhandari
INTRODUCTION: Cleft lip and palate (CLP) is the most frequent congenital facial abnormality and multidisciplinary treatment extending over many years is necessary to rehabilitate the affected individuals to normal function and esthetics. OBJECTIVE: To evaluate the clinical treatment outcome for missing teeth with tooth supported fixed partial dentures in unilateral cleft lip and palate patients. PATIENTS AND METHODS: Tooth supported fixed partial denture (T-FPD) was utilized for restoration of missing teeth in the cleft area for 9 non syndromic, unilateral cleft lip and palate patients (U-CLP)...
January 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/28162894/the-neolithic-transition-in-the-baltic-was-not-driven-by-admixture-with-early-european-farmers
#15
Eppie R Jones, Gunita Zarina, Vyacheslav Moiseyev, Emma Lightfoot, Philip R Nigst, Andrea Manica, Ron Pinhasi, Daniel G Bradley
The Neolithic transition was a dynamic time in European prehistory of cultural, social, and technological change. Although this period has been well explored in central Europe using ancient nuclear DNA [1, 2], its genetic impact on northern and eastern parts of this continent has not been as extensively studied. To broaden our understanding of the Neolithic transition across Europe, we analyzed eight ancient genomes: six samples (four to ∼1- to 4-fold coverage) from a 3,500 year temporal transect (∼8,300-4,800 calibrated years before present) through the Baltic region dating from the Mesolithic to the Late Neolithic and two samples spanning the Mesolithic-Neolithic boundary from the Dnieper Rapids region of Ukraine...
February 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28148921/subdivisions-of-haplogroups-u-and-c-encompass-mitochondrial-dna-lineages-of-eneolithic-early-bronze-age-kurgan-populations-of-western-north-pontic-steppe
#16
Alexey G Nikitin, Svetlana Ivanova, Dmytro Kiosak, Jessica Badgerow, Jeff Pashnick
Prehistoric Europe experienced a marked cultural and economic shift around 4000 years ago, when the established Neolithic agriculture-based economy was replaced by herding-pastoralist industry. In recent years new data about the genetic structure of human communities living during this transition period began to emerge. At the same time, the genetic identities of the Eneolithic and Early Bronze Age (EBA) inhabitants from a prehistoric cultural crossroad in western North Pontic steppe region remain understudied...
February 2, 2017: Journal of Human Genetics
https://www.readbyqxmd.com/read/28124749/ixodid-ticks-parasitizing-wild-carnivores-in-romania
#17
Gianluca D'Amico, Mirabela Oana Dumitrache, Ioana Adriana Matei, Angela Monica Ionică, Călin Mircea Gherman, Attila David Sándor, David Modrý, Andrei Daniel Mihalca
In Romania, data regarding hard-tick diversity and tick-host associations in wild carnivores are scarce. We aimed to identify tick species in wild carnivores and to establish reliable data on tick-host associations. The study was conducted in various Romanian localities from all five ecoregions found in the country. Fourteen species of wild carnivores were examined. Immature and adult ticks were collected and identified using the morphological keys. The frequency and mean intensity of tick infestation, overall and differentiated by species, developmental stage and host were calculated...
February 2017: Experimental & Applied Acarology
https://www.readbyqxmd.com/read/27994892/natural-tooth-pontic-an-instant-esthetic-option-for-periodontally-compromised-teeth-a-case-series
#18
Rishi Raj, Kriti Mehrotra, Ipshita Narayan, Triveni Mavinakote Gowda, D S Mehta
Sudden tooth loss in the esthetic zone of the maxillary or mandibular anterior region can be due to trauma, periodontal disease, or endodontic failure. The treatment options for replacing the missing tooth can vary between removable prosthesis, tooth-supported prosthesis, and implant-supported prosthesis. Irrespective of the final treatment, the first line of management would be to provisionally restore the patient's esthetic appearance at the earliest, while functionally stabilizing the compromised arch. Using the patient's own natural tooth as a pontic offers the benefits of being the right size, shape, and color and provides exact repositioning in its original intraoral three-dimensional position...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27939656/clinical-audit-of-posterior-three-unit-fixed-movable-resin-bonded-fixed-partial-dentures-a-retrospective-preliminary-clinical-investigation
#19
Michael G Botelho, John E Dyson, Thomas H F Mui, Walter Y H Lam
BACKGROUND: Two-unit cantilevered resin-bonded fixed partial dentures (RBFPDs) have higher retention rates over longer span fixed-fixed RBFPDs. It has been hypothesized that interabutment stresses associated with fixed-fixed designs cause prosthesis debonds therefore for the replacement of molar-sized and longer spans, non-rigid connectors have been used to allow independent movement between two abutment teeth. OBJECTIVES: This preliminary study evaluates the clinical longevity and subjects' satisfaction of three-unit fixed-movable (FM3) RBFPDs provided at a dental teaching hospital...
December 6, 2016: Journal of Dentistry
https://www.readbyqxmd.com/read/27861651/the-influence-of-bone-quality-on-the-biomechanical-behavior-of-a-tooth-implant-fixed-partial-denture-a-three-dimensional-finite-element-analysis
#20
Alexander Tsouknidas, Dimitrios Giannopoulos, Savvas Savvakis, Nikolaos Michailidis, Evdokia Lympoudi, Dimitrios Fytanidis, Argirios Pissiotis, Konstantinos Michalakis
PURPOSE: The purpose of this study was to evaluate whether or not bone quality has an effect on the biomechanical behavior of a tooth connected to an implant, when a rigid and a nonrigid attachment are used. MATERIALS AND METHODS: Models of fixed partial dentures supported by a tooth and an implant were developed. These models were then imported into finite element analysis software to study the impact of forces on different types of attachments (rigid vs nonrigid) and bones (types 1 to 4)...
November 2016: International Journal of Oral & Maxillofacial Implants
keyword
keyword
39624
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"